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A. T. WALRAVEN.

ADJUSTABLE BOOK COVER.

APPLICATION man MAY 23, I9).

Patented uly l,' 1919.

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-rnsr Speeificafion of Letters Patent. v

I: BOOK-GUVER.

Patented duly l, ldld.

Application filed May 23, 1919. Serial No. 299,2 ll6.

To all whom it may concern:

Be it known that l, ALBERT T. WALRAVEN, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Adjustable Book-Covers, of which the following is a specification.

The invention relates particularly to adjustable book covers.

'Quite a few two-piece book covers have been developed and they have been more or less satisfactory. So far as l have been able to learn no two-piece adjustable cover has been evolved in which one section has a slit in one of its ends and a reduced tongue is formed on the other section and passed through the slit, the end having the slit being glued to the tongue and the end of the tongue being glued to the section having the slit. This permits the sections to be used on various sized books and securely attached to each other with no loose ends. This ar rangement makes remarkably strong and lasting cover. The sections also have flaps folded inward to form pockets each receivand the short edges of one of the backs of the book covered.

The invention will be more readily understood from a reading of the following specificationand by reference to the accompanying drawings, in which an example of the invention is shown and wherein:

Figure l is a view showing two book cover sections detached, said sections being constructed in accordance with this invention,

Fig. 2 shows said sections united as they would be related when placed on a book, the tongue andslit being used.

In the drawings the numeral 1 designatm a book cover section and 2 a corresponding section. Each section has along its lower edge a flap 3 turned up and glued at its outer end onto a flap 4 turned in along the outer edge of the section. These flaps form a fixed pocket along the bottom and outer edge of each section. Each section also has a foldable flap 5 at its upper edge which is wedgeshaped to facilitate folding. The flaps 5 have gummed portions 6, whereby they may be secured to the end flaps 4, when folded.

The section 1 has an extension or tongue 7 while the section 2 has a shorter extension 8. The tongue 7 has a gummed strip or panel 9 contiguous to its outer or free edge and on its outer face. The extension 8 has on its inner face, a guunned strip or panel 10 conatfter the sections are in 7 days.

tiguous 11 is printed along the center of the panel 10, but terminates short of the top and bottom thereof. The purpose of this line is to indicate the location of a slit which may be cut. The tongue has guide lines 12 and 12 for cutting otl' portions at the top and bot tom so as to reduce the length of the tongue to fit in the slit as shown in Fig; 2.

By placing the covers of a book in the pockets the height of the sections'may be determined. The tongue having been out along the line 12, the upper end of the tongue may now be out along the line 12. Should the book be shorter than the hei ht of the sec tions then the tongue may be out farther down than the line 12. The length or height of the tongue having been determined a slit is out along the line 11 just long enough to receive the tongue. N ow by passing the tongue through the slit it will lie between the extension 8 and the cover of the book and as will be obvious from Fig. 2. By feeding the tongue into the slit the slack is taken up and the sections are brought into close contact with the book covers.

The flaps 5 have not yet been folded down.

y running a pencil along the slit a mark is made and the sections may then be removed. it is not desirable to moisten all of the panel 10 so only that portion between the slit and the body of the section is moistened, the panel 9 also being moistened. The sections are adjusted to the pencil mark and the gummed panels pressed down and caused to adhere. The sections may now be replaced by slipping the book thereinto. position on the book the flaps 5 may be turned down and secured to the flaps l by moistening the portions 6. The length of the flaps 5 may be reduced by cutting if necessary. 1

Another method of fastening the sections is to moisten the panel 9 and inner portion of the panel 10 before placing the tongue in the slit. When th be fed in until the sections are drawn snug around the boolr.

Thetongue and slit afl'ord a very secure fastening as it prevents the separation of the sections in case the gummed portions give away in handling the book as frequently happens in warm climates on hot Further the tongue and slit prevent relative longitudinal displacement of the sections.

to its free edge. A line or indication e tongue is inserted it may on its outer face contiguous to One of the advantages of this invention is that two thicknesses of paperare had at the back of the book the place where the Wear is greatest; also in most instances this double thickness is present along the lines where the book covers are hinged to the book back, giving added strength adjustable feature is highly important as is also the slit and tongue. The section 1 is made slightly wider than that a margin of lateral adjustment may be had by reason of the extended tongue 7.

What I claim, is:

1. A book cover composed of two sections each having flaps along its top, bottom-and outer edges, a tongue extending from one of the sections and having an adhesive panel its longitudinal edge, and an extension on the other section having an adhesive panel on its inner face contiguous to its longitudinal edge, said extension having means for the indication of a slit therein to receive the tongue, said flaps being folded inward to form pockets for the book covers.

2. Abook cover composed of two sections each having flaps along its to bottom and outer edges, one of the sections at these points. The f the section 2 so each section,

having a aeoaeei tongue with an adhesive panel on its outer face contiguous to its longitudinal edge, and an extension on the other section having an adhesive panel on its inner face contiguous to its longitudinal edge, said extension having a slitformed therein to receive the tongue whereb the sections may be adjusted toa book, t 1e tongue and slit 'forn'iing a means for holding the sections from separation, the flaps being adapted to fold inward and form pockets tor the book covers.

3. A book cover composed of two sections each having fixed pockets along its bottom and outer edges, a foldable flap at the top of one of the sections having a tongue with an adhesive panel on its outer face contiguous to its longitudinal edge, and an extension on the outer section having an adhesive panel on its inner face contiguous to its longitudinal edge, said extension having a slit 'ormed therein to receive the tongue whereby the sections may be adj usted to a book, the tongue and slit forming a means for holding the sections from separation, the flaps and form pockets for the book covers.

In testimony whereof I afiix my signature.

ALBERT T. \VALRAVEN.

being adapted to fold inward 

